The calculation of certain performance variables requires a setting:

The calculation of the bicycle speed can be done using an external speed sensor (wheel revolution counter). When a sensor is connected, the speed calculated from the sensor is taken into account (and not that returned by the GPS service).

To compute this speed, it is necessary to know the distance traveled at each turn of the wheel, and therefore to enter your wheel size in the 'settings' section of the 'adjustment' tab (4th tab) of the application.

Also, the instantaneous power smoothing is set in this same section. It is necessary to connect an external power sensor (BT) to allow this data to be displayed.